Explicitly documents that *_free(NULL) does nothing.
Fixes two cases where that wasn't true.
Fixes#24675.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Sasa Nedvedicky <sashan@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24735)
We save the error state from the thread that encountered
a permanent error condition caused by system or internal
error to the QUIC_CHANNEL.
Then we restore it whenever we are returning to a user
call when protocol is shutdown.
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21087)
